<template>
  <div class="shopcar-container">
    <div class="goods-list">
      <!-- 商品列表区域 -->
      <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
        <div class="mui-card-content">
          <div class="mui-card-content-inner">
            <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
            <img :src="item.thumb_path" />
            <div class="info">
              <h1>{{item.title}}</h1>
              <p>
                <span class="price">￥{{item.sell_price}}</span>
                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                <a href="#" @click.prevent="remove(item.id,i)">删除</a>
              </p>
            </div>
          </div>
        </div>
      </div>
    </div>

    <!-- 结算区域 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner jiesuan">
          <div class="left">
            <p>总计（不含运费）</p>
            <p>已勾选商品<span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span>件，总价<span class="red">￥{{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
          </div>
          <mt-button type="danger">结算</mt-button>
        </div>
      </div>
    </div>

    <p>{{$store.getters.getGoodsSelected}}</p>
  </div>
</template>

<script>
import numbox from "../subcomponents/shopcar_numbox.vue";
export default {
  data() {
    return {
      goodslist: []
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    // 获取到store 中所有商品的 id ，然后拼接出一个 用逗号分隔的字符串
    getGoodsList() {
      var idArr = [];
      this.$store.state.car.forEach(item => {
        idArr.push(item.id);
      });

      //   如果 购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
      if (idArr.length <= 0) {
        return;
      }
      //   获取购物车商品列表
      this.$http
        .get("api/goods/getshopcarlist/" + idArr.join(","))
        .then(result => {
          if (result.body.status === 0) {
            this.goodslist = result.body.message;
          }
        });
    },
    remove(id,index){
      // 点击删除，把商品从 store 中根据 传递的 id 删除，同时，把当前组件中的 goodslist 中，对应要删除的那个商品，使用 index 来删除
      this.goodslist.splice(index,1);
      this.$store.commit('removeFormCar',id);
    },
    selectedChanged(id,value){
      // 每当点击开关，把最新的 开关状态，同步到store 中
      console.log(id+'--'+value);
      this.$store.commit('updateGoodsSelected',{id,selected:value});
    }
  },
  components: {
    numbox
  }
};
</script>

<style lang="scss" scoped>
.shopcar-container {
  background-color: #eee;
  overflow: hidden;
  .goods-list {
    .mui-card-content-inner {
      display: flex;
      align-items: center;
    }
    img {
      width: 55px;
      height: 55px;
    }
    h1 {
      font-size: 13px;
    }
    .info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      .price {
        color: red;
        font-weight: bold;
      }
    }
  }
  .jiesuan{
    display: flex;
    justify-content: space-between;
    align-items: center;
    .red{
      color: red;
      font-weight: bold
    }
  }
}
</style>